The prophet Isaiah [was] the son of a certain Amoz. . . . The prophet's family probably belonged to the aristocracy of Jerusalem and may have had connections with the royal house. At any rate the prophet seems to have been able to enter the presence of the king at will. . . . The prophet lived through . . . the invasion of Sennacherib in 701 B.C. Isaiah has well been called "the prophet of faith." He stands a sublime figure for faith in the supremacy of the spiritual over the earthly; for the potency of high ideas and ideals over brute force and power. To have combined such a lofty faith with practical statesmanship—for Isaiah was essentially a man of action—is an achievement worthy of the greatest men of any age.
—From the Encyclopædia Britannica.